Multiple amps on single woofer

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crimson reign

Member - Posts: 3

Joined: January 03, 2003

Location: United States

Posted: November 20, 2004 at 8:08 PM / IP Logged

Quick question! Can you hook multiple amps on a single woofer? I'm not talking about one amp per voice coil, I want to know if and how you put multple amps on each voice coil. Let's say you have a dual 4 ohm woofer that can handle 1000 watts per voice coil. Can you put 2 500 watt RMS amps on each voice coil for a total of 4 amps at 1000 watts total power on 1 woofer?

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: November 20, 2004 at 8:47 PM / IP Logged

Yes, but only with amps that are designed for it (unless you are a good electrical engineer.) It's called bridging. Most commercial amps will not allow you to do this.

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dragonrage

Copper - Posts: 193

Joined: March 15, 2003

Location: United States

Posted: November 20, 2004 at 10:37 PM / IP Logged

Use a continuity tester between the speaker negative terminals on each amp. You can do it if 1) there is no continuity; 2) the amps are stable at half the resistance of the coil (in this case, they'd need to be 2 ohm stable); 3) the phase of the amps is the exact same, should be ok if they're the same kind of amp.

There's nothing wrong with putting 2 power sources in series as long as they aren't common negative and they can handle the power.

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winston_smith

Member - Posts: 41

Joined: November 17, 2004

Posted: November 21, 2004 at 10:42 PM / IP Logged

if your gunna use 2 amps on 1 sub it's best to match them up with a scope.

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: November 22, 2004 at 10:54 AM / IP Logged

Like I said, not a recomended thing to try unless you know what you are doing or unless the amps are designed for it (like some Viper amps, for example.)

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Multiple amps on single woofer

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